Quickly disassembled hand flat gate valve

Abstract

The utility model discloses a quick disassembly and assembly type manual flat gate valve, and belongs to flat gate valve technical field, including the gate valve main part, the upper end of gate valve main part is provided with first valve stem, valve stem subassembly, valve stem subassembly includes the second valve stem of setting in first valve stem upper end, the upper end of second valve stem is opened in the cylindrical through slot perpendicularly, the inner wall of cylindrical through slot is fixedly connected with circular fixed block, the circular fixed block is provided with rotating shaft, the lower end of rotating shaft is fixed with rectangular limit block, the upper end of rotating shaft is fixedly connected with circular control block. The equipment is in view of the use problem, through being provided with arc limit block and arc limit groove, cooperation rectangular limit block, rectangular limit groove, spring, can conveniently realize the loading and unloading between first valve stem and second valve stem, thereby avoiding the influence of valve stem protruding knock to the transportation of flat gate valve or the operation in narrow space.

Description

Technical Field

[0001] This utility model relates to the field of flat gate valve technology, and in particular to a quick-assembly manual flat gate valve. Background Technology

[0002] In the field of industrial fluid control, manual flat gate valves are a common type of valve, mainly used to cut off or connect the medium in pipelines. Its core feature is that it uses a flat gate as the opening and closing component, and the valve is opened and closed by manual operation.

[0003] Traditional manual flat gate valves typically have a one-piece stem design. During transportation, the stem protrudes from the valve body, making it susceptible to deformation and damage from impacts, which affects the valve's lifespan. Furthermore, in confined working spaces, the protruding stem occupies additional operating space, significantly complicating installation, commissioning, and maintenance, thus reducing work efficiency. Therefore, designing a quick-assembly manual flat gate valve is necessary to address this issue. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a quick-assembly manual flat gate valve. In terms of usage, it is equipped with an arc-shaped limiting block and an arc-shaped limiting groove, which, together with a rectangular limiting block, a rectangular limiting groove, and a spring, allows for convenient assembly and disassembly between the first valve stem and the second valve stem. This avoids the valve stem protruding and bumping, which could affect the transportation of the flat gate valve or its operation in confined spaces.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick-release manual flat gate valve includes a gate valve body with a first valve stem at its upper end; a valve stem assembly including a second valve stem at the upper end of the first valve stem, the upper end of the second valve stem having a vertically formed cylindrical groove, a circular fixing block fixedly connected to the inner wall of the cylindrical groove, a rotating shaft passing through the circular fixing block, a rectangular limiting block fixedly connected to the lower end of the rotating shaft, a circular control block fixedly connected to the upper end of the rotating shaft, the lower end of the circular control block and the upper end of the circular fixing block being elastically connected by a spring, and two arc-shaped limiting blocks fixedly connected to the lower end of the second valve stem.

[0007] Preferably, the circular control block is slidably connected to the inner wall of the cylindrical through groove.

[0008] Preferably, the first valve stem has a cylindrical inner cavity, a rectangular through groove is formed between the inner top of the cylindrical inner cavity and the upper end of the first valve stem, and a rectangular limiting groove is formed at the inner top of the cylindrical inner cavity.

[0009] Preferably, the rectangular limiting block is slidably connected to the inner wall of the rectangular limiting groove.

[0010] Preferably, two arc-shaped limiting grooves are vertically formed at the upper end of the first valve stem, and the two arc-shaped limiting blocks are slidably connected to the inner wall of the corresponding arc-shaped limiting groove.

[0011] Preferably, a handwheel is fixedly connected to the upper end of the second valve stem.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] The valve stem assembly is designed with two arc-shaped limiting blocks and corresponding arc-shaped limiting grooves for pre-positioning. Combined with rectangular limiting blocks, rectangular limiting grooves, and springs, it allows for convenient and quick assembly and disassembly of the first and second valve stems. The overall separable design offers significant advantages, allowing for priority installation of the gate valve body followed by the valve stem in confined working spaces. This increases operational space during installation, reducing the actual difficulty of installation and maintenance. Furthermore, separate transportation after separation effectively prevents damage to the valve stem from external factors, ensuring the performance and service life of the flat gate valve. Overall, it offers good practicality. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a quick-assembly and disassembly manual flat gate valve proposed in this utility model;

[0015] Figure 2 for Figure 1 Partial structural sectional view;

[0016] Figure 3 for Figure 2 Enlarged view of point A;

[0017] Figure 4 for Figure 2 Enlarged view of point B;

[0018] Figure 5 This is a cross-sectional view of the first valve stem.

[0019] In the figure: 1 Gate valve body, 2 First valve stem, 3 Second valve stem, 4 Cylindrical through groove, 5 Circular fixing block, 6 Rotating shaft, 7 Rectangular limit block, 8 Circular control block, 9 Spring, 10 Arc-shaped limit block, 11 Handwheel, 12 Cylindrical inner cavity, 13 Rectangular through groove, 14 Rectangular limit groove, 15 Arc-shaped limit groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-5 A quick-assembly manual flat gate valve includes a gate valve body 1, and a first valve stem 2 is provided at the upper end of the gate valve body 1.

[0022] The first valve stem 2 has a cylindrical inner cavity 12. The space inside the cylindrical inner cavity 12 is used for the rectangular limiting block 7 to rotate after passing through the rectangular through groove 13. A rectangular through groove 13 is formed between the inner top of the cylindrical inner cavity 12 and the upper end of the first valve stem 2. A rectangular limiting groove 14 is formed at the inner top of the cylindrical inner cavity 12. By controlling the rectangular limiting block 7 to move down and rotate into the rectangular limiting groove 14, the installation between the first valve stem 2 and the second valve stem 3 can be realized. Two arc-shaped limiting grooves 15 are vertically formed at the upper end of the first valve stem 2. By inserting the two arc-shaped limiting blocks 10 into the corresponding arc-shaped limiting grooves 15, the pre-positioning between the first valve stem 2 and the second valve stem 3 before installation can be realized, and it can be ensured that the first valve stem 2 rotates with the second valve stem 3 in the future.

[0023] The system also includes a valve stem assembly, which includes a second valve stem 3 located at the upper end of the first valve stem 2. A handwheel 11 is fixedly connected to the upper end of the second valve stem 3. A cylindrical through groove 4 is vertically opened at the upper end of the second valve stem 3. A circular fixing block 5 is fixedly connected to the inner wall of the cylindrical through groove 4. A rotating shaft 6 is passed through the circular fixing block 5. A rectangular limiting block 7 is fixed to the lower end of the rotating shaft 6. The rectangular limiting block 7 is slidably connected to the inner wall of the rectangular limiting groove 14. A circular control block 8 is fixedly connected to the upper end of the rotating shaft 6. The circular control block 8 is slidably connected to the inner wall of the cylindrical through groove 4. The lower end of the circular control block 8 and the upper end of the circular fixing block 5 are elastically connected by a spring 9. The spring 9 can ensure that the rectangular limiting block 7 is stably located in the rectangular limiting groove 14, thereby ensuring the connection between the first valve stem 2 and the second valve stem 3. Two arc-shaped limiting blocks 10 are fixedly connected to the lower end of the second valve stem 3. Both arc-shaped limiting blocks 10 are slidably connected to the inner wall of the corresponding arc-shaped limiting groove 15.

[0024] In this utility model, when used for the first time (i.e., when the first valve stem 2 and the second valve stem 3 are in a separated state), the gate valve body 1 is first installed at the designated pipeline. Then, the two arc-shaped limiting blocks 10 at the lower end of the second valve stem 3 are aligned with the two arc-shaped limiting grooves 15 and inserted. This operation can achieve the pre-positioning of the first valve stem 2 and the second valve stem 3 before installation, and at the same time ensure that the first valve stem 2 can rotate with the second valve stem 3.

[0025] During the pre-positioning process, it is necessary to ensure that the rectangular limiting block 7 is aligned with and inserted into the rectangular through slot 13. After the above operation is completed, press down the circular control block 8 to drive the rotating shaft 6 downward, causing the spring 9 to be compressed. When the rotating shaft 6 moves downward, it will drive the rectangular limiting block 7 to move into the cylindrical inner cavity 12. At this time, rotate the circular control block 8, and through the rotating shaft 6, drive the rectangular limiting block 7 to rotate horizontally by 90°, so that the rectangular limiting block 7 is aligned with the rectangular limiting slot 14. Then release the circular control block 8. Under the elastic force of the spring 9, the circular control block 8 will automatically move upward, and then through the rotating shaft 6, drive the rectangular limiting block 7 to move upward into the rectangular limiting slot 14. This allows for the installation and connection between the first valve stem 2 and the second valve stem 3, making the entire installation process relatively convenient. The separate design between the first valve stem 2 and the second valve stem 3 allows for the priority installation of the gate valve body 1 in narrow working spaces, followed by the installation of the valve stem portion. This increases the operating space during installation and reduces the actual installation and maintenance difficulties. After the installation of the first valve stem 2 and the second valve stem 3 is completed, rotating the handwheel 11 drives the second valve stem 3 to rotate, which in turn drives the first valve stem 2 to rotate, thereby enabling the opening or closing operation of the valve within the gate valve body 1.

[0026] When it is necessary to disassemble the first valve stem 2 and the second valve stem 3, the circular control block 8 can be pressed down to drive the rotating shaft 6 and the rectangular limit block 7 to move down synchronously, so that the rectangular limit block 7 disengages from the rectangular limit groove 14 (the spring 9 will be compressed). Then, the circular control block 8 is rotated horizontally by 90° so that the rectangular limit block 7 is aligned with the rectangular through groove 13. At this time, the circular control block 8 is released. Under the elastic force of the spring 9, the rectangular limit block 7 will automatically move upward and pass through the rectangular through groove 13. Finally, the second valve stem 3 is lifted upward so that the two arc-shaped limit blocks 10 are pulled out from the corresponding arc-shaped limit grooves 15 respectively, thus completing the disassembly of the first valve stem 2 and the second valve stem 3. By disassembling the first valve stem 2 and the second valve stem 3, it is convenient to transport the entire device separately, thereby effectively avoiding damage to the valve stem part due to external factors.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick-assembly and disassembly manual flat gate valve, characterized in that, include: Gate valve body (1), with a first valve stem (2) provided at the upper end of the gate valve body (1); The valve stem assembly includes a second valve stem (3) disposed on the upper end of the first valve stem (2). A cylindrical through groove (4) is vertically opened on the upper end of the second valve stem (3). A circular fixing block (5) is fixedly connected to the inner wall of the cylindrical through groove (4). A rotating shaft (6) is disposed through the circular fixing block (5). A rectangular limiting block (7) is fixed to the lower end of the rotating shaft (6). A circular control block (8) is fixedly connected to the upper end of the rotating shaft (6). The lower end of the circular control block (8) and the upper end of the circular fixing block (5) are elastically connected by a spring (9). Two arc-shaped limiting blocks (10) are fixedly connected to the lower end of the second valve stem (3).

2. The quick-assembly manual flat gate valve according to claim 1, characterized in that, The circular control block (8) is slidably connected to the inner wall of the cylindrical through groove (4).

3. The quick-assembly manual flat gate valve according to claim 1, characterized in that, The first valve stem (2) has a cylindrical inner cavity (12) inside. A rectangular through groove (13) is provided between the inner top of the cylindrical inner cavity (12) and the upper end of the first valve stem (2). A rectangular limiting groove (14) is provided at the inner top of the cylindrical inner cavity (12).

4. A quick-assembly manual flat gate valve according to claim 3, characterized in that, The rectangular limiting block (7) is slidably connected to the inner wall of the rectangular limiting groove (14).

5. A quick-assembly manual flat gate valve according to claim 1, characterized in that, The upper end of the first valve stem (2) has two arc-shaped limiting grooves (15) vertically formed, and the two arc-shaped limiting blocks (10) are slidably connected to the inner wall of the corresponding arc-shaped limiting groove (15).

6. A quick-assembly manual flat gate valve according to claim 1, characterized in that, A handwheel (11) is fixedly connected to the upper end of the second valve stem (3).

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